Hi Amy,
There are few points you can check here:
1. What version of Connect did you use to publish? I noticed that you have 1.1 specified in Setting tab in your xls form. You might want to remove it and use the latest Connect to publish the survey again.
2. On survey123 website, click your survey and check Collaborate tab and make sure you choose first or second option to have user open the survey from browser or an option to choose from browser or field app.